EP0783406A1 - Cover foil with heat-activated layer - Google Patents

Cover foil with heat-activated layer

Info

Publication number
EP0783406A1
EP0783406A1 EP19950934328 EP95934328A EP0783406A1 EP 0783406 A1 EP0783406 A1 EP 0783406A1 EP 19950934328 EP19950934328 EP 19950934328 EP 95934328 A EP95934328 A EP 95934328A EP 0783406 A1 EP0783406 A1 EP 0783406A1
Authority
EP
European Patent Office
Prior art keywords
layer
instance
temperature
cover foil
pct
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19950934328
Other languages
German (de)
French (fr)
Other versions
EP0783406B1 (en
Inventor
Johannes Antonius Maria Reinders
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sallmetall BV
Original Assignee
Sallmetall BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from NL9401566A external-priority patent/NL9401566A/en
Application filed by Sallmetall BV filed Critical Sallmetall BV
Publication of EP0783406A1 publication Critical patent/EP0783406A1/en
Application granted granted Critical
Publication of EP0783406B1 publication Critical patent/EP0783406B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1207—Heat-activated adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
    • B32B37/153—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state at least one layer is extruded and immediately laminated while in semi-molten state
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0008—Electrical discharge treatment, e.g. corona, plasma treatment; wave energy or particle radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/412—Transparent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2310/00—Treatment by energy or chemical effects
    • B32B2310/14—Corona, ionisation, electrical discharge, plasma treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2323/00—Polyalkenes
    • B32B2323/04—Polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2323/00—Polyalkenes
    • B32B2323/10—Polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2327/00—Polyvinylhalogenides
    • B32B2327/06—PVC, i.e. polyvinylchloride
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2331/00—Polyvinylesters
    • B32B2331/04—Polymers of vinyl acetate, e.g. PVA
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2333/00—Polymers of unsaturated acids or derivatives thereof
    • B32B2333/04—Polymers of esters
    • B32B2333/12—Polymers of methacrylic acid esters, e.g. PMMA, i.e. polymethylmethacrylate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2355/00—Specific polymers obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of index codes B32B2323/00 - B32B2333/00
    • B32B2355/02—ABS polymers, i.e. acrylonitrile-butadiene-styrene polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2367/00—Polyesters, e.g. PET, i.e. polyethylene terephthalate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2369/00—Polycarbonates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2590/00—Signboards, advertising panels, road signs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/913—Material designed to be responsive to temperature, light, moisture
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/914—Transfer or decalcomania
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24851—Intermediate layer is discontinuous or differential
    • Y10T428/24868—Translucent outer layer
    • Y10T428/24876—Intermediate layer contains particulate material [e.g., pigment, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]

Definitions

  • the invention relates to a light-transmitting, for instance transparent, cover foil intended for adhesion to an optionally information-carrying surface.
  • Such a cover foil comprises a first layer of polyester and a pressure- sensitive or heat-activated glue layer connected thereto.
  • the existing structure may not be adversely affected when the glue layer is activated.
  • the described, known foil does not meet these requirements. It is therefore an object of the invention to provide a light-transmitting cover foil which has a structure, for instance a texture and/or a pattern pressed out of its main surface, while provisions are also present to adhere the foil to a surface for covering using simple means and without adversely affecting the existing structure.
  • the invention provides a light-transmitting cover foil intended to be arranged adheringly to a surface, for instance the surface of a carrier plate, optionally bearing information such as letters, numbers, images or the like, which foil consists of a laminate comprising of: a first layer plastically deformable only at a relatively high first temperature, for instance in the range of 120*C - 200°C and comprising for instance poly ⁇ carbonate, PMMA, PVC, ABS, PP, PE, which first layer is provided before, during or after joining together to the other layers with a structure, for instance a texture and/or a pattern pressed out of its main surface by exerting pressure and increasing temperature to at least the said first temperature, for instance by applying a heated profile roller; a second layer adhered thereto consisting of a dimensionally stable carrier layer comprising for in ⁇ stance polycarbonate, PMMA, PVC, polyester/PET, ABS; and a third layer adhered thereto which is meltable and thus heat-activated at a relatively low second
  • polyester/PET is excluded as material for the first layer.
  • the invention is based on the insight that the structuring of the first layer can take place in advance and that due to the relatively high softening temperature of the applied material, in the order of for instance 180*C, when the glue layer is activated, for instance at a temperature of 70"C, the first layer including its said structure is not affected, while the glue layer is never ⁇ theless fully activated so that the cover foil can be adhered effectively to the surface for covering.
  • the second layer consisting for example of polyester is to a large degree non-stretch and non- shrink.
  • This layer also makes possible heating of a strip of cover foil in a laminating machine without this resulting in a softening of the total cover foil such as to limit the ease of handling thereof.
  • a specific embodiment has the special feature that the first layer and the second layer consist of one integral, chemically substantially homogeneous layer. Attention is once again drawn to the fact that polyester is excluded as material for the first layer. In this case both integrated layers must therefore consist of a mate ⁇ rial from which polyester/PET is excluded.
  • a specific embodiment has the special feature that the adhesive agents comprise an adhesion-enhancing activation of at least the adhesive surface, for instance a corona treatment, particularly in the case of polyester and polypropylene. Other related treatments such as an ion bombardment may also be appropriate.
  • the adhesion between the diverse layers can in principle take place in any suitable manner.
  • a specific embodiment is that in which the adhesive agents comprise an adhesive layer such as a layer of primer adhering to both the surfaces for adhesion. All suitable means can be considered to provide the first layer with a structure.
  • a specific embodiment is that in which the first layer is provided in advance with a structure by a mechanical, chemical and/or physical treatment or with a covering layer forming a structure, for instance by vapour-deposition, sputtering or the like.
  • the softening temperature of the first and third layer will have to differ substantially, for instance in the order of at least 30*C. It is in any case necessary to avoid the structure of the fist layer being adversely affected when the cover foil is heat to stick it onto a surface for covering.
  • the laminate can comprise a UN-blocking layer, for instance a lacquer layer, present at a suitable position.
  • a UN-blocking layer for instance a lacquer layer

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Thermal Sciences (AREA)
  • Laminated Bodies (AREA)
  • Wrappers (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Adhesive Tapes (AREA)

Abstract

PCT No. PCT/NL95/00318 Sec. 371 Date Jun. 2, 1997 Sec. 102(e) Date Jun. 2, 1997 PCT Filed Sep. 22, 1995 PCT Pub. No. WO96/09928 PCT Pub. Date Apr. 4, 1996The invention provides a light-transmitting cover foil intended to be arranged adheringly to a surface, for instance the surface of a carrier plate, optionally bearing information such as letters, numbers, images or the like, which foil consists of a laminate comprising: a first layer plastically deformable only at a relatively high first temperature, for instance in the range of 120 DEG C.-200 DEG C. and comprising for instance polycarbonate, PMMA, PVC, ABS, PP, PE, which first layer is provided before, during or after joining together to the other layers with a structure, for instance a texture and/or pattern pressed out of its main surface by exerting pressure and increasing temperature to at least the said first temperature, for instance by applying a heated profile roller; a second layer adhered thereto consisting of a dimensionally stable carrier layer comprising for instance polycarbonate, PMMA, PVC, polyester/PET, ABS; and a third layer adhered thereto which is meltable and thus thermally-activated at a relatively low second temperature, for instance in the range of 50 DEG C.-90 DEG C. and which consists of a hot-melt layer or glue layer, comprising for instance EVA, EEA, EBA, EMA, GBA or other low-melting plastics including polyolefins and copolymer esters, polyacetate esters, softened PVCs; which said layers are mutually connected by adhesive agents, for instance by making use of coextrusion.

Description

COVER FOIL WITH HEAT-ACTIVATED LAYER
The invention relates to a light-transmitting, for instance transparent, cover foil intended for adhesion to an optionally information-carrying surface.
Such a cover foil is known. This known foil comprises a first layer of polyester and a pressure- sensitive or heat-activated glue layer connected thereto.
It is an object of the invention to embody a cover foil such that it can offer a combination of two aspects, that is, a first layer provided with a structure and a heat-activated glue layer. The existing structure may not be adversely affected when the glue layer is activated.
The described, known foil does not meet these requirements. It is therefore an object of the invention to provide a light-transmitting cover foil which has a structure, for instance a texture and/or a pattern pressed out of its main surface, while provisions are also present to adhere the foil to a surface for covering using simple means and without adversely affecting the existing structure.
In respect of the above the invention provides a light-transmitting cover foil intended to be arranged adheringly to a surface, for instance the surface of a carrier plate, optionally bearing information such as letters, numbers, images or the like, which foil consists of a laminate comprising of: a first layer plastically deformable only at a relatively high first temperature, for instance in the range of 120*C - 200°C and comprising for instance poly¬ carbonate, PMMA, PVC, ABS, PP, PE, which first layer is provided before, during or after joining together to the other layers with a structure, for instance a texture and/or a pattern pressed out of its main surface by exerting pressure and increasing temperature to at least the said first temperature, for instance by applying a heated profile roller; a second layer adhered thereto consisting of a dimensionally stable carrier layer comprising for in¬ stance polycarbonate, PMMA, PVC, polyester/PET, ABS; and a third layer adhered thereto which is meltable and thus heat-activated at a relatively low second temperature, for instance in the range of 50*C - 90*C and which consists of a hot-melt layer or glue layer, comprising for instance EVA, EEA, EBA, EMA, GBA or other low-melting plastics including polyolefins and copolymer esters, polyacetate esters, softened PVCs; which said layers are mutually connected by adhesive agents, for instance by making use of co- extrusion.
Attention is drawn to the fact that polyester/PET is excluded as material for the first layer. The invention is based on the insight that the structuring of the first layer can take place in advance and that due to the relatively high softening temperature of the applied material, in the order of for instance 180*C, when the glue layer is activated, for instance at a temperature of 70"C, the first layer including its said structure is not affected, while the glue layer is never¬ theless fully activated so that the cover foil can be adhered effectively to the surface for covering.
The second layer consisting for example of polyester is to a large degree non-stretch and non- shrink. This layer also makes possible heating of a strip of cover foil in a laminating machine without this resulting in a softening of the total cover foil such as to limit the ease of handling thereof. A specific embodiment has the special feature that the first layer and the second layer consist of one integral, chemically substantially homogeneous layer. Attention is once again drawn to the fact that polyester is excluded as material for the first layer. In this case both integrated layers must therefore consist of a mate¬ rial from which polyester/PET is excluded.
A specific embodiment has the special feature that the adhesive agents comprise an adhesion-enhancing activation of at least the adhesive surface, for instance a corona treatment, particularly in the case of polyester and polypropylene. Other related treatments such as an ion bombardment may also be appropriate. The adhesion between the diverse layers can in principle take place in any suitable manner. A specific embodiment is that in which the adhesive agents comprise an adhesive layer such as a layer of primer adhering to both the surfaces for adhesion. All suitable means can be considered to provide the first layer with a structure. A specific embodiment is that in which the first layer is provided in advance with a structure by a mechanical, chemical and/or physical treatment or with a covering layer forming a structure, for instance by vapour-deposition, sputtering or the like.
In general the softening temperature of the first and third layer will have to differ substantially, for instance in the order of at least 30*C. It is in any case necessary to avoid the structure of the fist layer being adversely affected when the cover foil is heat to stick it onto a surface for covering.
In order to ensure a good UN-stability the laminate can comprise a UN-blocking layer, for instance a lacquer layer, present at a suitable position.
*****

Claims

1. Light-transmitting cover foil intended to be arranged adheringly to a surface, for instance the sur¬ face of a carrier plate, optionally bearing information such as letters, numbers, images or the like, which foil consists of a laminate comprising of: a first layer plastically deformable only at a relatively high first temperature, for instance in the range of 120°C - 200'C and comprising for instance poly¬ carbonate, PMMA, PVC, ABS, PP, PE, which first layer is provided before, during or after joining together to the other layers with a structure, for instance a texture and/or pattern pressed out of its main surface by exert¬ ing pressure and increasing temperature to at least the said first temperature, for instance by applying a heated profile roller; a second layer adhered thereto consisting of a dimensionally stable carrier layer comprising for in¬ stance polycarbonate, PMMA, PVC, polyester/PET, ABS; and a third layer adhered thereto which is meltable and thus heat-activated at a relatively low second temperature, for instance in the range of 50βC - 90*C and which consists of a hot-melt layer or glue layer, comprising for instance EVA, EEA, EBA, EMA, GBA or other low-melting plastics including polyolefins and copolymer esters, polyacetate esters, softened PVCs; which said layers are mutually connected by adhesive agents, for instance by making use of co- extrusion.
2. Cover foil as claimed in claim 1, wherein the first layer and the second layer consist of one integral, chemically substantially homogeneous layer.
3. Cover foil as claimed in claim 1, wherein the adhesive agents comprise an adhesion-enhancing activation of at least the adhesive surface, for instance a corona treatment, particularly in the case of polyester and polypropylene.
4. Cover foil as claimed in claim 1, wherein the adhesive agents comprise an adhesive layer such as a layer of primer adhering to both the surfaces for adhe¬ sion.
5. Cover foil as claimed in claim 1, wherein the first layer is provided in advance with a structure by a mechanical, chemical and/or physical treatment or with a covering layer forming a structure, for instance by vapour-deposition, sputtering or the like.
6. Cover foil as claimed in claim 1, wherein the laminate comprises a UN-blocking layer, for instance a lacquer layer.
*****
EP95934328A 1994-09-26 1995-09-22 Cover foil with heat-activated layer Expired - Lifetime EP0783406B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
NL9401566A NL9401566A (en) 1994-09-26 1994-09-26 Covering film with heat-activable adhesive layer
NL9401566 1994-09-26
NL9401885 1994-11-11
NL9401885A NL9401885A (en) 1994-09-26 1994-11-11 Cover foil with heat-activatable adhesive layer.
PCT/NL1995/000318 WO1996009928A1 (en) 1994-09-26 1995-09-22 Cover foil with heat-activated layer

Publications (2)

Publication Number Publication Date
EP0783406A1 true EP0783406A1 (en) 1997-07-16
EP0783406B1 EP0783406B1 (en) 2000-06-07

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EP95934328A Expired - Lifetime EP0783406B1 (en) 1994-09-26 1995-09-22 Cover foil with heat-activated layer

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US (1) US5851639A (en)
EP (1) EP0783406B1 (en)
JP (1) JP3936735B2 (en)
KR (1) KR100348803B1 (en)
AT (1) ATE193676T1 (en)
AU (1) AU3687795A (en)
DE (1) DE69517435T2 (en)
DK (1) DK0783406T3 (en)
ES (1) ES2147304T3 (en)
GR (1) GR3034277T3 (en)
NL (1) NL9401885A (en)
PT (1) PT783406E (en)
WO (1) WO1996009928A1 (en)

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NL1002551C2 (en) * 1996-03-08 1997-01-31 Johannes Antonius Maria Reinde Transparent adhesive protective laminated covering film for application to a substrate - has a top layer which does not adhere to the outer surface of the bottom layer when the film is on a roll
NL1006592C2 (en) * 1996-07-16 1998-01-21 Sallmetall Bv Light-transmitting foil for application to surface carrying information
NL1003602C2 (en) * 1996-07-16 1998-01-21 Johannes Antonius Maria Reinde Cover foil.
NL1003601C2 (en) * 1996-07-16 1998-01-21 Johannes Antonius Maria Reinde Cover foil.
CA2221266A1 (en) 1996-12-10 1998-06-10 Achim Grefenstein Laminated sheets or films and moldings thereof
GB2325433B (en) * 1997-05-22 2000-04-12 Royal Sovereign Korea Inc Laminate film
DE19954701A1 (en) * 1999-11-13 2002-02-21 Tesa Ag Self-adhesive, highly transparent protective article for automotive windows and other sensitive surfaces
KR100324412B1 (en) * 2000-03-15 2002-02-27 김양평 Layer film sheet for laminating
EP1593488B1 (en) * 2004-04-06 2008-06-11 Bayer MaterialScience AG Laminate film and method of manufacturing same
CN111004592A (en) * 2019-12-12 2020-04-14 深圳清华大学研究院 Hard polyvinyl chloride adhesive and preparation method thereof

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US4063641A (en) * 1975-03-05 1977-12-20 Philip Morris Industrial Incorporated Two-side legible packaging film and package made therefrom
CA1157990A (en) * 1979-03-08 1983-11-29 Hisaya Sakurai Thermoplastic resinous composition
JPS6211644A (en) * 1985-06-26 1987-01-20 株式会社クラレ Laminate having excellent gas permeability resistance
EP0358445A3 (en) * 1988-09-07 1990-11-14 Tonen Sekiyukagaku K.K. Polyethylene composite film and label
DE3842948A1 (en) * 1988-12-21 1990-06-28 Wolff Walsrode Ag HOT-COATABLE, GAS-DENSITY MULTILAYER FILMS
NZ235390A (en) * 1989-09-29 1992-03-26 Kuraray Co Resin composition comprising a mixture of ethylene-vinyl acetate copolymers and its use in a layered product

Non-Patent Citations (1)

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Title
See references of WO9609928A1 *

Also Published As

Publication number Publication date
DE69517435T2 (en) 2009-09-17
EP0783406B1 (en) 2000-06-07
US5851639A (en) 1998-12-22
WO1996009928A1 (en) 1996-04-04
JP3936735B2 (en) 2007-06-27
KR100348803B1 (en) 2003-03-06
GR3034277T3 (en) 2000-12-29
JPH10506585A (en) 1998-06-30
PT783406E (en) 2000-10-31
ATE193676T1 (en) 2000-06-15
NL9401885A (en) 1996-05-01
DK0783406T3 (en) 2000-08-07
AU3687795A (en) 1996-04-19
DE69517435D1 (en) 2000-07-13
ES2147304T3 (en) 2000-09-01

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